Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5657173 | Working force quantity imparting member, working force quantity imparting structure and lens barrel | Hitoshi Imanari | 1997-08-12 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5657173 | Working force quantity imparting member, working force quantity imparting structure and lens barrel | Hitoshi Imanari | 1997-08-12 |